Quantifying relative affinities of Po and Pb in different populations of marine particulate matter is of great importance in utilizing Po as a tracer for carbon cycling. We collected and analyzed water samples for the concentrations of dissolved and total Po and Pb from the upper 600 m of the water column at Bermuda Timeseries Study site (September 1999 to September 2000) to investigate their s...

Due to the remoteness and difficulty of sampling, 210 Po Pb data are scarce in Southern Ocean. Here, activity concentrations around Prydz Bay austral summer were determined understand their spatial variation evaluate dynamics particle organic matter (POM). The dissolved (D Po) Pb) range from 0.47 3.20 Bq⋅m –3 1.15 2.97 , respectively, with lower values shelf. particulate (P open ocean increase ...

The disequilibrium between lead-210 ( 210 Pb) and polonium-210 Po) is increasingly used in oceanography to quantify particulate organic carbon (POC) export from the upper ocean. This proxy based on deficits of Po typically observed water column due preferential removal relative Pb by sinking particles. Yet, a number studies have reported unexpected large deep ocean indicating scavenging despite...